**2.12 Immobilized glucose isomerase**

The enzyme that was used in this study was immobilized glucose isomerase and supplied from Cargill, Bursa. It was produced by Novozymes and the group of it was Sweetzyme IT Extra. The color of the enzyme was brown, and it was in the granulated form. Its approximate density value was 0.50 g/mL. Its typical activity range was above 400 IGIU/G (immobilized glucose isomerase unit per gram). The enzyme was stored at 4°C to avoid contamination.
